.tabs {
  width: 100%;
  height: 50px;
  background-color: white;
  border-bottom: 1px solid #ededed;
  position: relative;
  display: flex;
  .item {
    width: 50%;
    height: 50px;
    text-align: center;
    line-height: 50px;
    color: #646566;
  }
  .line {
    width: 50%;
    position: absolute;
    bottom: 0;
    transition: left 0.3s;
    display: flex;
    justify-content: center;
    span {
      display: inline-block;
      width: 60px;
      height: 3px;
      background-color: #ff5f16;
      border-radius: 1px;
    }
  }
  .active {
    color: #ff5f16;
  }
}

header {
  width: 100%;
  background-color: white;
  transition: top 0.3s;
}
